IPA: /ˈnɪəsaɪtɪdli/
KK: /ˈnɪrˌsaɪtɪdli/
In a way that shows a lack of foresight or consideration for the future; focusing only on immediate concerns or details.
He nearsightedly ignored the long-term consequences of his actions.
Nearsightedly → It is formed from "near" (from Old English "neah", meaning close) and "sight" (from Old English "sīht", meaning vision) combined with the suffix "-ly" (meaning in a manner). The word "nearsightedly" means in a manner that pertains to seeing things that are close, often with difficulty seeing distant objects.
Think of seeing things that are 'close' ('near') and having 'vision' ('sight') — when someone does this 'in a manner' ('-ly'), they are nearsighted.